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Reversible Dimensional Programming of Covalent Organic Frameworks.

Zifan Li1, Zhibin Zhang1,2, Yunhai Liu1,3

  • 1National Key Laboratory of Uranium Resources Exploration-Mining and Nuclear Remote Sensing, East China University of Technology, Nanchang, Jiangxi, 330013, P.R. China.

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|January 16, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method to control the dimensionality of covalent organic frameworks (COFs). This technique allows for reversible dimensional programming, enhancing their efficiency in uranium extraction.

Keywords:
Clip‐off chemistryCovalent organic frameworksDimensionalReversible coordination

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Area of Science:

  • Materials Science
  • Chemistry

Background:

  • Dimensionality is crucial for covalent organic frameworks' (COFs) properties, but precise control is challenging.
  • Existing methods for COF dimensional manipulation are limited.

Purpose of the Study:

  • To develop a novel strategy for reversible dimensional programming of COFs.
  • To explore the synthesis of lower-dimensional COFs with enhanced functionalities.

Main Methods:

  • A reversible coordination-directed clip-off chemistry strategy was employed.
  • COFs with coordinative Ag-N bonds were used as templates for structural transformation.
  • Selective cleavage of Ag-N linkages facilitated dimensional reduction.

Main Results:

  • A 3D COF was successfully converted into a 1.5-dimensional (1.5D) COF.
  • The dimensional tailoring was fully reversible upon reintroduction of Ag(I).
  • The derived lower-dimensional COFs showed improved efficiency in uranium extraction.

Conclusions:

  • The developed strategy enables precise and reversible control over COF dimensionality.
  • Lower-dimensional COFs exhibit enhanced performance in critical applications like uranium extraction.
  • This work opens new avenues for designing functional materials with tailored dimensions.